Cucumber BDD Interview Questions and Answers

Q1. What is BDD cucumber framework?

Ans

Cucumber is a tool based on Behavior Driven Development (BDD) framework which is used to write acceptance tests for a web application. It is written in Ruby. It allows automation of functional validation in an easily readable and understandable format like plain English.

Q2. What are hooks and tagging in BDD Cucumber?

Ans

Cucumber supports hooks, which are blocks of code that run before or after each scenario. You can define them anywhere in your project or step definition layers, using the methods @Before and @After. Cucumber Hooks allows us to better manage the code workflow and helps us to reduce code redundancy.

Q3. What is the profile of Cucumber?

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Profile in cucumber allows a way to define a group of tests in a feature file to run a selected group instead of executing all the commands while testing a feature. Cucumber profiles allow running step definitions and features.

Q4. What is BDD testing?

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BDD is an extension of Test-Driven Development (TDD) that emphasizes developing features based on a user story and writing code that provides a solution to real problems.

Q5. What is BDD style?

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Behavior-driven development (BDD) is an Agile software development methodology in which an application is documented and designed around the behavior a user expects to experience when interacting with it.

Q6. What are the 3 practices of BDD?

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The BDD process moves through three phases—discovery, formulation, and automation—where the acceptance criteria are transformed into acceptance tests that are later automated.

Q7. What are BDD tools?

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• Cucumber (Ruby framework)
• SpecFlow (.NET framework)
• Behave (Python framework)
• JBehave (Java framework)
• JBehave Web (Java framework with Selenium integration)
• Lettuce (Python framework)
• Concordion (Java framework)
• Behat (PHP framework)
• Kahlan (PHP framework)
• DaSpec (JavaScript framework)
• Jasmine (JavaScript framework)
• Cucumber-js (JavaScript framework)
• Squish GUI Tester (BDD GUI Testing Tool for JavaScript, Python, Perl, Ruby and Tcl)
• Spock (Groovy framework)
• Yadda (Gherkin language support for frameworks such as Jasmine (JavaScript framework))

Q8. What are the principles of BDD?

Ans

• Identify business feature.
• Identify scenarios under the selected feature.
• Define steps for each scenario.
• Run feature and fail.
• Write code to make steps pass.
• Refactor code, Create reusable automation library.
• Run feature and pass.
• Generate test reports.

Q9. What is purpose of BDD?

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Q10. What problems does BDD solve?

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Behavior-driven development (BDD) is a software development process that attempts to solve the problem of implementing poorly defined requirements. It seeks to leverage the domain expertise of business and QA professionals to ensure that developers build the correct software.

Q11. Mention differences between BDD and TDD?

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Q12. Explain Regular Expressions?

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A regular expression is a pattern used to describe an amount of text. The standard Regular expression includes a single literal character.

Q13. Explain the test harness?

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A test harness for Cucumber and RSpec enables a separate responsibility between the context setup and interacting with the browser cleaning up the step definition files.

Q14. What is a Step Definition?

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Step definition is used to map the Test Case Steps in the feature files to code. It runs the steps using Application Under Test (AUT) and verifies the outcomes against the required results. To execute step definition, it must be related to the given component in a feature.

Q15. What are the Advantages of Cucumber?

Ans

The advantages of using Cucumbers Are as follows: 

• Cucumber Testing enhances the end-user experience
• It helps to include business stakeholder who cannot read the code easily 
• Allows quick and easy setup and execution
• Style of writing tests enables easy reuse of code in the tests

Q16. What is meant by a feature file?

Ans

A feature file offers a high-level description of an Application Under Test (AUT). It consists of the following components:

• Feature: It defines the implementation of the current test script.
• Scenario: It is the expected outcome and steps for a specific test case.
• Scenario outline: It can be executed for multiple sets of data.
• Given: It defines the context of the text to be implemented.
• When: It specifies the test action that has to perform.
• Then: The expected outcome of a test can be represented by “Then.”